diff --git a/[refs] b/[refs]
index 639fbfa38996..026b2d1d83a2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1514ab09edb071345fe17cd230c97f9e72c9478e
+refs/heads/master: 1a13286b104faeeb4f4bc3bfbf4d4fcdcd2569ed
diff --git a/trunk/arch/i386/boot/apm.c b/trunk/arch/i386/boot/apm.c
index 8be3f5686af6..eab50c55a3a5 100644
--- a/trunk/arch/i386/boot/apm.c
+++ b/trunk/arch/i386/boot/apm.c
@@ -45,9 +45,10 @@ int query_apm_bios(void)
 
 	/* Disconnect first, just in case */
 	ax = 0x5304;
+	bx = 0;
 	asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
-		     : "+a" (ax)
-		     : : "ebx", "ecx", "edx", "esi", "edi");
+		     : "+a" (ax), "+b" (bx)
+		     : : "ecx", "edx", "esi", "edi");
 
 	/* Paranoia */
 	ebx = esi = 0;